| DTC P2647: | VTEC System Stuck ON |
Special Tools Required
Oil pressure gauge attachment ( 07NAJ-P070100)
| 1. | Check the engine oil level. Is the engine oil level OK? YES - Go to 2. NO - Adjust the engine oil to the proper level, then go to 12. |
| 2. | Turn the ignition switch ON (II). |
| 3. | Clear the DTC with the HDS. |
| 4. | Do the VTEC TEST in the INSPECTION MENU with the HDS. Is the result OK? YES - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the EOP sensor, the rocker arm oil control solenoid, and the ECM/PCM.n NO - Go to 5. |
| 5. | Turn the ignition switch OFF. |
| 6. | Remove the EOP sensor (A), install the special tools as shown, then install the EOP sensor in the oil pressure gauge attachment (B). NOTE: Install the sensor in the reverse order of removal with a new O-ring.
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| 7. | Start the engine. Hold the engine speed at 3,000 rpm (min-1) without load (in Park or neutral) until the radiator fan comes on, then let it idle for 2 minutes. |
| 8. | Do the VTEC TEST in the INSPECTION MENU with the HDS. |
| 9. | Check the oil pressure. Does the oil pressure increase to 392 kPa (4.0 kgf/cm2, 56.9 psi)? YES - Replace the EOP sensor, then go to 10. NO - Replace the rocker arm oil control valve, then go to 10. |
| 10. | Turn the ignition switch OFF. |
| 11. | Reconnect all connectors. |
| 12. | Turn the ignition switch ON (II). |
| 13. | Reset the ECM/PCM with the HDS. |
| 14. | Do the ECM/PCM idle learn procedure. |
| 15. | Start the engine. Hold the engine speed at 3,000 rpm (min-1) without load (in Park or neutral) until the radiator fan comes on, then let it idle for 2 minutes. |
| 16. | Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P2647 is indicated, check for poor connections or loose terminals at the rocker arm oil control solenoid, the EOP sensor, and the ECM/PCM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - Go to 17. |
| 17. | Monitor the OBD STATUS for DTC P2647 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete.n NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil control solenoid, the EOP sensor, and the ECM/PCM, then go to 1 and recheck. If the screen indicates NOT COMPLETED, go to 15 and recheck. |